Is there such a thing as a loose valve?

lili

You put a LONG handle. Or you can connect a motor to the shaft that turns on when the shaft starts turning to provide an assist.

Edwena

Look up solenoid valves. They open with a 12 volt charge. It is how the sprinklers come on automatically. Lawn irrigation at Lowe's is a good place to find a valve for water service.

Aussie Devil

you want a 1/4 turn ball valve

Nuff Sed

Yes, many valves have internal geometry that allows them to be activated with very little force, either by having a long stem to spread the "work" over many turns, or perhaps a bearing that allows a quarter-turn to open or close against a moderate amount of pressure (e.g., up to 100 psi). For instance, a fire hydrant valve may take 15 or 20 turns to open or close completely, due to the need to operate the gate against a potentially massive pressure. If you give us another hint about your intended application,maybe someone can make a specific recommendation (domestic water at 40 psi, hyrdraulic fluid at 4,000 psi, how often, what mechanism (knob, lever, solenoid, spillway), etc).

Mj

Basic plumbing valve. There are many types.

STEVEN F

What the valve controls is the biggest factor in the force required to turn the valve.

Paul

There are "push button" valves. Google it

Anonymous

You put a LONG handle. Or you can connect a motor to the shaft that turns on when the shaft starts turning to provide an assist.